Ubuntu 20.04 LTS switch from Nautilus to Nemo
sudo apt purge nautilus gnome-shell-extension-desktop-icons -y
sudo apt install nemo -y
xdg-mime default nemo.desktop inode/directory application/x-gnome-saved-search
gsettings set org.gnome.desktop.background show-desktop-icons false
gsettings set org.nemo.desktop show-desktop-icons true
sudo nano /etc/xdg/autostart/nemo-autostart.desktop
[Desktop Entry]
Type=Application
Name=Files
Exec=nemo-desktop
OnlyShowIn=GNOME;Unity;
X-Ubuntu-Gettext-Domain=nemo